1 | /* |
2 | * This file is part of the Chelsio FCoE driver for Linux. |
3 | * |
4 | * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved. |
5 | * |
6 | * This software is available to you under a choice of one of two |
7 | * licenses. You may choose to be licensed under the terms of the GNU |
8 | * General Public License (GPL) Version 2, available from the file |
9 | * COPYING in the main directory of this source tree, or the |
10 | * OpenIB.org BSD license below: |
11 | * |
12 | * Redistribution and use in source and binary forms, with or |
13 | * without modification, are permitted provided that the following |
14 | * conditions are met: |
15 | * |
16 | * - Redistributions of source code must retain the above |
17 | * copyright notice, this list of conditions and the following |
18 | * disclaimer. |
19 | * |
20 | * - Redistributions in binary form must reproduce the above |
21 | * copyright notice, this list of conditions and the following |
22 | * disclaimer in the documentation and/or other materials |
23 | * provided with the distribution. |
24 | * |
25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
32 | * SOFTWARE. |
33 | */ |
34 | |
35 | #ifndef __CSIO_DEFS_H__ |
36 | #define __CSIO_DEFS_H__ |
37 | |
38 | #include <linux/kernel.h> |
39 | #include <linux/stddef.h> |
40 | #include <linux/timer.h> |
41 | #include <linux/list.h> |
42 | #include <linux/bug.h> |
43 | #include <linux/pci.h> |
44 | #include <linux/jiffies.h> |
45 | |
46 | #define CSIO_INVALID_IDX 0xFFFFFFFF |
47 | #define CSIO_INC_STATS(elem, val) ((elem)->stats.val++) |
48 | #define CSIO_DEC_STATS(elem, val) ((elem)->stats.val--) |
49 | #define CSIO_VALID_WWN(__n) ((*__n >> 4) == 0x5 ? true : false) |
50 | #define CSIO_DID_MASK 0xFFFFFF |
51 | #define CSIO_WORD_TO_BYTE 4 |
52 | |
53 | #ifndef readq |
54 | static inline u64 readq(void __iomem *addr) |
55 | { |
56 | return readl(addr) + ((u64)readl(addr + 4) << 32); |
57 | } |
58 | |
59 | static inline void writeq(u64 val, void __iomem *addr) |
60 | { |
61 | writel(val, addr); |
62 | writel(val >> 32, addr + 4); |
63 | } |
64 | #endif |
65 | |
66 | static inline int |
67 | csio_list_deleted(struct list_head *list) |
68 | { |
69 | return ((list->next == list) && (list->prev == list)); |
70 | } |
71 | |
72 | #define csio_list_next(elem) (((struct list_head *)(elem))->next) |
73 | #define csio_list_prev(elem) (((struct list_head *)(elem))->prev) |
74 | |
75 | /* State machine */ |
76 | struct csio_lnode; |
77 | |
78 | /* State machine evets */ |
79 | enum csio_ln_ev { |
80 | CSIO_LNE_NONE = (uint32_t)0, |
81 | CSIO_LNE_LINKUP, |
82 | CSIO_LNE_FAB_INIT_DONE, |
83 | CSIO_LNE_LINK_DOWN, |
84 | CSIO_LNE_DOWN_LINK, |
85 | CSIO_LNE_LOGO, |
86 | CSIO_LNE_CLOSE, |
87 | CSIO_LNE_MAX_EVENT, |
88 | }; |
89 | |
90 | typedef void (*csio_sm_state_t)(struct csio_lnode *ln, enum csio_ln_ev evt); |
91 | |
92 | struct csio_sm { |
93 | struct list_head sm_list; |
94 | csio_sm_state_t sm_state; |
95 | }; |
96 | |
97 | static inline void |
98 | csio_set_state(void *smp, void *state) |
99 | { |
100 | ((struct csio_sm *)smp)->sm_state = state; |
101 | } |
102 | |
103 | static inline void |
104 | csio_init_state(struct csio_sm *smp, void *state) |
105 | { |
106 | csio_set_state(smp, state); |
107 | } |
108 | |
109 | static inline void |
110 | csio_post_event(void *smp, uint32_t evt) |
111 | { |
112 | ((struct csio_sm *)smp)->sm_state(smp, evt); |
113 | } |
114 | |
115 | static inline csio_sm_state_t |
116 | csio_get_state(void *smp) |
117 | { |
118 | return ((struct csio_sm *)smp)->sm_state; |
119 | } |
120 | |
121 | static inline bool |
122 | csio_match_state(void *smp, void *state) |
123 | { |
124 | return (csio_get_state(smp) == (csio_sm_state_t)state); |
125 | } |
126 | |
127 | #define CSIO_ASSERT(cond) BUG_ON(!(cond)) |
128 | |
129 | #ifdef __CSIO_DEBUG__ |
130 | #define CSIO_DB_ASSERT(__c) CSIO_ASSERT((__c)) |
131 | #else |
132 | #define CSIO_DB_ASSERT(__c) |
133 | #endif |
134 | |
135 | #endif /* ifndef __CSIO_DEFS_H__ */ |
136 | |